As an employer it is your responsibility to assess the risk of fires and explosions that may be caused by dangerous substances which are present, used or stored in the workplace. These risks must then be eliminated or reduced as far as is reasonably practicable. The aim is to protect employees and others who may be put at risk such as visitors to the workplace and members of the public.

What is DSEAR?

"DSEAR is the primary legislation applying to the control of substances that can cause fires and explosions in the workplace and is an acronym for Dangerous Substances and Explosive Atmospheres Regulations 2002".

In June 2015 the regulation was amended to include risks caused by gasses under pressure and substances that are corrosive to metals.

What is a Dangerous Substance?

A dangerous substance or mixtures of substances is anything which could create an explosive or flammable atmosphere. It can be broken down into liquids, gases, vapours and dusts, all of which may be found in the workplace.

Some examples of type of activity covered by DSEAR:

  • Handling and storage of flammable wastes such as fuel oils
  • Use of flammable gases
  • Handling and storage of dusts in manufacturing industries
  • Chemical manufacturing, processing and warehousing
  • Work which could release naturally occurring flammable substances such as methane in coalmines or at landfill sites

DSEAR Compliance Stages:

  • Assessment of the risk
  • Prevention or controlling of the risk
  • Implementation of control measures
  • Reduction of consequence severity
  • Preparation of emergency plans and procedures
  • Provision of information, instruction and training for personnel

Need further information?


Dangerous Substances and Explosive Atmospheres Regulations 2002 (DSEAR)


Management of Health and Safety at Work Regulations 1999


If you have any query are simply unsure do not hesitate to contact us.